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板蓝根干糖浆有效成分的测定目前尚无法定的标准。本实验采用旋光法测定其中蔗糖的含量,以便推知浸膏的投料量。为控制成品内在质量提供一种检测方法。一、工作曲线的制备: 精密秤取1、2、3、4、5g蔗糖于50ml量瓶中,加少量水溶解,再加入5.00ml10％硝酸铅液,加水稀
There is no statutory standard for the determination of active ingredients of Radix Isatidis dry syrup. In this experiment, the content of sucrose was determined by polarimetry to infer the amount of the extract. Provides a test method for controlling the intrinsic quality of the finished product. 1. Preparation of working curve: Accurately weigh 1,2,3,4,5g sucrose in a 50ml volumetric flask, add a small amount of water to dissolve it, add 5.00ml of 10% lead nitrate solution, and add water.